http://www.hintsandthings.co.uk/musichall/CDroms.htm I like hanging them around the garden to scare critters. Not that I'm into gardening. Another one I liked is making a clock out of a CD with good CD-art on it.
lol this is sooooo true, though i still got a kick out of that one. ill edit this post when i look through the 101 things to tell what ones i was fond of i liked the ones that would scare off the pests and i thought the locator one at the very bottom was a nice trick, may go and do that one myself
some years back i used about 100 to make this huge hanging mobil/wind chime...they dont make alot of noise each..but 100 does use a dremel tool and carve them with intricate designs..works on vinyl records..should be cool with cd too. more examples http://scottmarr.blogspot.com/2010/05/records.html